Method of producing cyanogen compounds.



No Drawing.

.sTATEs 'rEr CARL BE'I'NIJL, on'momcn, GERMANY.

To all whom it may concern subject of. the German Emperor, and resi- Be it known that I, Dr'. CARL BEINDL, a

' form a gas mixture of volatilized or gaseous nitrogenous-compounds with carbon compounds, and conduct this mixture into contact vwith a heated catalytic agent, which is preferably in the form of a 'wire net of suitable. material; To produce commercially satisfactory results, it is essential that the compounds be pure or substantially so, and

that the mixture contain no more than ten' parts, by volume, of the carbon compounds to each part, by volume, of the nitrogenous compounds.

g It. will be .understoodthat various kinds of gas may be used to form-the mixture abovereferred to, but humid gases should preferably not be employed. The mixture may be effected in a suitable gasometer, into which the gases are fed by pressure and suction pumps. 7 If, for example, a mixture ofammonia and acetylene is to be treated, it

1 is advisable to place adjacent the acetylene generator agas scrubber and an ammonia generator. The mixture may, however, be effected directly in the gas generator itself, in which case concentrated ammonia is causedto act directly on the calcium carbid psed for generating the acetylene. I have ound that I obtain the best results by conducting a mixture consisting of 34.- parts by weight of ammonia and 13 parts 'by weightof acetylene, into contact with the catalytic agent. I

The catalytic agent, which as above stated METHOD OF PRODUCING CYAiN'QGEN COMPOUNDS.

Specification of Letters Patent. Patented June 29, 1915 Application filed September 1, 1910. Serial No. 579,994.

is preferably in the form of-a wire net, may consist of gold, silver, iridium, palladium, rhodium, copper, manganese,,cobalt, chromium, iron, or the nitrids thereof. I may also construct the catalytic agent of metal a1loy,,such as copper and zinc or the like. The temperature to which the catalytic agent is heated toproduce the desired re sults, depends upon the natureof the catalytic agent itself, the nature of the gases subjected to treatment and the velocity of the gas as it contacts with the catalytic agent. If amixture of. acetylene and ammonia is brought into, contact with a coptemperature of 480 Centigrade:

After the gases have passed the catalytic agent they are cooled and conducted into an absorption apparatus preferably supplied with caustic lye, after which treatment the gases may be again used.

, per catalytic agent, cyanogen is formed at'a The cyanic compounds are obtained, by

means well known in the art, from cyanate of ammonla and cyanate of potasslum, respectively.

I am aware that it hasbeen heretofore proposed to subject a mixture of nitro enous compounds and' carbon compoun s to the action of a catalytic agent and I lay no claim to this process, but

What I claim and desire to secure by Letters Patent is z c The herein described process of producing hydrocyanic acid and cyanic compounds, which process consists in forming a'mixture of no more than ten parts by volume of substantially pure carbon compound and one part by volume of substantially pure nitrogenous compound, and conducting said mixture into contact with a catalytic agent of wire-net incapable of decomposing the nitrogenous compounds in said mixture and heated to a temperature not exceedin In testimony whereof I have hereunto set my hand in the presence of two subscrib ing witnesses.

\ DR. CARL BElNDT Witnesses:

A. V. W. COTTER, MATHILDE K; HELD. 

